文献类型：会议论文

英文题名：Study on the influence of back blade shape on the wear characteristics of centrifugal slurry pump

作者：Cai, X.[1];Zhou, S. P.[1];Li, S.[1]

机构：[1]East China Univ Sci & Technol, Minist Educ, Key Lab Pressure Syst & Safety, 130 Meilong Rd, Shanghai 200237, Peoples R China

会议论文集：7th International Conference on Pumps and Fans (ICPF)

会议日期：OCT 18-21, 2015

会议地点：Hangzhou, PEOPLES R CHINA

语种：英文

外文关键词：Impellers

摘要：CFX particle inhomogeneous model was introduced for the mechanism analysis of a centrifugal slurry pump which is equipped with back blades on impeller shrouds. Combining with the total efficiency correction, the simulation showed good prediction accuracy of external characteristics results compared with the experimental values. Vorticity and Q-Criterion were chosen as the variables to illustrate the abrasion morphology and wear mechanism by contrasting simulation result with worn impeller in engineering. The analysis showed that the large vorticity intensity areas are distributed at the edge of impeller shroud and intensively behind the back blades. Moreover, the vorticity scattered on suction surface of back blade shows the largest intensity. The contour of Q-Criterion demonstrated that the swirl scale in front cavity is obviously larger than that in back cavity. The distribution of vorticity on both front and back shrouds can reasonably explain the impeller wear characteristics. Finally, the forward curved back blade proved to be excellence performance in vorticity distribution.